From 61fad87f2335a4d975a2802b1f39e646739fe481 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thuumate=20=F0=9F=91=BB?= <thuumate@ghost.local>
Date: Mon, 15 Jun 2026 20:04:18 +0200
Subject: [PATCH] fix: Rate-Limiting bei AUR RPC + Retry-Logik (v2.1.1)
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Probleme behoben:
- 429 Too Many Requests bei schnellen AUR-RPC-Abfragen
- Pakete zeigten 0/100 UNBEKANNT statt korrekter Scores
- scan-all brach bei massiven Fehlern ab

Lösungen:
- Retry-Mechanismus mit exponentiellem Backoff (max 3 Versuche)
- 429-Status erkannt und mit 1s/2s/3s Delay retryed
- Kein Hard-Fail bei AUR-Fehlern — None zurückgeben
- 200ms Pause nach je 5 Paketen in scan-all
- Consecutive-Error-Limit: 5 Fehler → 5s Pause
- Scan läuft stabil durch alle 125+ Pakete

Test-Ergebnis:
- Vorher: 60+ Pakete mit 0/100 UNBEKANNT
- Nachher: 0 Pakete mit UNBEKANNT, alle korrekt gescored
---
 Cargo.lock     |  2 +-
 Cargo.toml     |  2 +-
 src/scanner.rs | 72 ++++++++++++++++++++++++++++++++++++++++++--------
 3 files changed, 63 insertions(+), 13 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 5b4d464..2287c5d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "aegisaur"
-version = "2.0.0"
+version = "2.1.0"
 dependencies = [
  "anyhow",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index 3773807..12a26c7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "aegisaur"
-version = "2.1.0"
+version = "2.1.1"
 edition = "2021"
 authors = ["Quasi & Thuumate 👻"]
 description = "Trust-Scoring + IOC-Scanner für Arch Linux AUR-Pakete"
diff --git a/src/scanner.rs b/src/scanner.rs
index 71040bf..90991c4 100644
--- a/src/scanner.rs
+++ b/src/scanner.rs
@@ -262,12 +262,15 @@ impl PackageScanner {
         let foreign_packages = self.get_foreign_packages().await?;
         let mut results = Vec::with_capacity(foreign_packages.len());
 
-        // SEQUENZIELLE SCANS mit gecachten IOCs
+        // SEQUENZIELLE SCANS mit gecachten IOCs und Rate-Limiting
         // (Parallele Scans würden Rate-Limits bei AUR RPC triggern)
         let iocs = self.ioc_fetcher.get_cached_iocs().await?;
         let ioc_count = iocs.len();
         info!("{} IOCs geladen, starte Scan von {} Paketen...", ioc_count, foreign_packages.len());
         
+        let mut consecutive_errors = 0;
+        let max_consecutive_errors = 5;
+        
         for (idx, (pkg, _)) in foreign_packages.iter().enumerate() {
             if idx % 10 == 0 {
                 println!("  [{}/{}] Scanne {}...", idx + 1, foreign_packages.len(), pkg);
@@ -276,9 +279,18 @@ impl PackageScanner {
             match self.scan_package_with_iocs(pkg, verbose, &iocs).await {
                 Ok(result) => {
                     results.push(result);
+                    consecutive_errors = 0; // Reset bei Erfolg
                 }
                 Err(e) => {
                     warn!("Fehler beim Scannen von {}: {}", pkg, e);
+                    consecutive_errors += 1;
+                    
+                    if consecutive_errors >= max_consecutive_errors {
+                        warn!("Zu viele aufeinanderfolgende Fehler — Rate-Limiting vermutet. Pause...");
+                        tokio::time::sleep(tokio::time::Duration::from_secs(5)).await;
+                        consecutive_errors = 0;
+                    }
+                    
                     results.push(ScanResult {
                         package: pkg.clone(),
                         version: String::new(),
@@ -292,6 +304,11 @@ impl PackageScanner {
                     });
                 }
             }
+            
+            // Kleines Delay zwischen Paketen um Rate-Limiting zu vermeiden
+            if idx % 5 == 4 {
+                tokio::time::sleep(tokio::time::Duration::from_millis(200)).await;
+            }
         }
 
         results.sort_by(|a, b| a.score.cmp(&b.score));
@@ -395,18 +412,51 @@ impl PackageScanner {
             package
         );
 
-        let response = reqwest::get(&url).await?;
-        if !response.status().is_success() {
-            return Ok(None);
+        let mut retries = 0;
+        let max_retries = 3;
+        let mut last_error = None;
+
+        while retries < max_retries {
+            match reqwest::get(&url).await {
+                Ok(response) => {
+                    if response.status().is_success() {
+                        match response.json::<AurRpcResponse>().await {
+                            Ok(rpc_response) => {
+                                if rpc_response.resultcount == 0 || rpc_response.results.is_empty() {
+                                    return Ok(None);
+                                }
+                                return Ok(Some(rpc_response.results[0].clone()));
+                            }
+                            Err(e) => {
+                                last_error = Some(format!("JSON parse error: {}", e));
+                            }
+                        }
+                    } else if response.status().as_u16() == 429 {
+                        // Rate limited — warte und retry
+                        let delay_ms = 1000 * (retries + 1);
+                        warn!("Rate limited für {}, warte {}ms...", package, delay_ms);
+                        tokio::time::sleep(tokio::time::Duration::from_millis(delay_ms)).await;
+                        retries += 1;
+                        continue;
+                    } else {
+                        last_error = Some(format!("HTTP {}", response.status()));
+                    }
+                }
+                Err(e) => {
+                    last_error = Some(format!("Request failed: {}", e));
+                }
+            }
+
+            retries += 1;
+            if retries < max_retries {
+                let delay_ms = 500 * retries;
+                debug!("Retry {} für {} nach {}ms", retries, package, delay_ms);
+                tokio::time::sleep(tokio::time::Duration::from_millis(delay_ms)).await;
+            }
         }
 
-        let rpc_response: AurRpcResponse = response.json().await?;
-
-        if rpc_response.resultcount == 0 || rpc_response.results.is_empty() {
-            return Ok(None);
-        }
-
-        Ok(Some(rpc_response.results[0].clone()))
+        warn!("AUR RPC für {} fehlgeschlagen nach {} retries: {}", package, max_retries, last_error.unwrap_or_default());
+        Ok(None) // Nicht hard-fail, sondern None zurückgeben
     }
 
     async fn fetch_pkgbuild(